10+ Koparo Interview Questions and Answers

Questions related to maintenance engineering including eddy current, 5S TPM, electromagnetic induction, RPM measurement, DC motor, shift handover, major breakdown, and star delta starter.

• Eddy current is a current induced in a conductor due to a changing magnetic field

• 5S TPM is a methodology for workplace organization and standardization

• Electromagnetic induction is the production of an electromotive force across a conductor due to a changing magnetic field

• RPM measurement can b...read more

To improve the power factor of a 130 kW load with a power factor of 0.7, capacitors can be used. The required rating of the capacitor depends on the desired power factor improvement.

• Install capacitors in parallel with the load to improve power factor

• Calculate the required capacitance using the formula: C = (P * tan(acos(pf))) / (V^2)

• Choose capacitors with the appropriate voltage and capacitance rating for the load

• Ensure proper installation and maintenance of the capacitors to...read more

To use a third party device in a PLC, you need to establish communication protocols and configure the PLC to send and receive data from the device.

• Identify the communication protocol supported by the third party device (e.g. Modbus, Profibus)

• Configure the PLC to communicate with the third party device using the identified protocol

• Map the data points between the PLC and the third party device to ensure seamless data exchange

• Test the communication to ensure proper functionality...read more

To improve 5S, proper training, regular audits, and continuous improvement initiatives are necessary.

• Provide training to employees on 5S principles and techniques.

• Conduct regular audits to identify areas for improvement and ensure compliance.

• Implement continuous improvement initiatives to sustain 5S practices.

• Encourage employee participation and ownership in maintaining a clean and organized workplace.

• Use visual management tools such as signage and color coding to support 5S ...read more

In a parallel circuit, components are connected in separate branches, allowing current to flow through multiple paths. In a series circuit, components are connected in a single path, where current flows through each component in sequence.

• Parallel circuit allows current to flow through multiple paths, while series circuit has only one path for current.

• In a parallel circuit, voltage across each component is the same, while in a series circuit, voltage is divided among component...read more

Hysteresis loss can be calculated using the area enclosed by the hysteresis loop on a B-H curve.

• Calculate the area enclosed by the hysteresis loop on a B-H curve

• Use the formula: Hysteresis Loss = ∮B.dH

• Consider the material's properties and operating conditions for accurate calculation

The eddy current formula calculates the magnitude of induced currents in a conductor due to a changing magnetic field.

• The formula is given by: I = π * D * f * B * σ

• Where I is the eddy current (A)

• D is the diameter of the coil (m)

• f is the frequency of the magnetic field (Hz)

• B is the magnetic field strength (T)

• σ is the conductivity of the material (S/m)

Star delta starter is a type of reduced voltage starter used for starting high power motors.

• Consists of two contactors - one for star connection and one for delta connection

• Reduces starting current and torque to prevent damage to motor windings

• Commonly used for motors with high starting current requirements, such as induction motors

Fluorescent effect is the emission of light by a substance that has absorbed light or other electromagnetic radiation.

• Fluorescent effect occurs when a substance absorbs light at a specific wavelength and then re-emits light at a longer wavelength.

• Common examples include fluorescent light bulbs, glow-in-the-dark materials, and certain minerals that glow under UV light.

• Fluorescent materials can be used in various applications such as lighting, security features, and scientific ...read more

The number of frequencies should be chosen based on the complexity of the model and the desired level of accuracy.

• Consider the size and complexity of the model - more frequencies may be needed for intricate geometries

• Balance between computational time and accuracy - higher number of frequencies increases computation time

• Perform convergence studies to determine the minimum number of frequencies required for accurate results

Skin effect is the tendency of alternating current to flow near the surface of a conductor, due to self-inductance.

• Skin effect is more prominent at higher frequencies.

• It causes the effective resistance of the conductor to increase.

• Skin effect can be reduced by using hollow conductors or by using stranded conductors.

• Example: Skin effect is a common phenomenon in high-frequency transmission lines.

The purchase to payment cycle refers to the process of purchasing goods or services and making the corresponding payment.

• It starts with identifying the need for a product or service.

• The next step is to create a purchase order and send it to the supplier.

• Upon receiving the goods or services, the invoice is generated.

• The invoice is then matched with the purchase order and goods receipt.

• Once the invoice is approved, the payment is made to the supplier.

• Finally, the payment is rec...read more

Modal analysis is a technique used to study the dynamic behavior of structures by identifying their natural frequencies and mode shapes.

• Modal analysis helps in understanding how a structure will respond to dynamic loads.

• It involves calculating the natural frequencies and mode shapes of a structure.

• Modal analysis is commonly used in structural engineering, aerospace engineering, and mechanical engineering.

• The results of modal analysis can be used to optimize the design of stru...read more

KSPG offers a challenging work environment with opportunities for growth and development.

• KSPG has a strong reputation in the industry

• The company values innovation and encourages employees to think outside the box

• There are opportunities for career advancement and professional development

• KSPG has a diverse and inclusive workplace culture

• The company offers competitive compensation and benefits packages

A purchase order is a document issued by a buyer to a seller, indicating the types, quantities, and agreed prices for products or services.

• It is a formal request to purchase goods or services

• It includes details such as item descriptions, quantities, prices, and delivery dates

• It serves as a legally binding contract between the buyer and seller

• It helps in tracking and managing inventory and expenses

• Example: A company sends a purchase order to a supplier to order 100 units of a ...read more

Subcontracting is the practice of hiring another company or individual to perform specific tasks or services on behalf of the main contractor.

• Subcontracting involves outsourcing certain tasks or services to a third party.

• The subcontractor is responsible for completing the assigned work according to the terms of the contract.

• Subcontracting can be used in various industries, such as construction, manufacturing, and IT.

• Examples of subcontracting include hiring a cleaning company...read more